<script type="module">
	{
		var s = '𠮷a';
		document.write(`返回字节长度为0的UTF-16字符的码点：${s.codePointAt(0)}<br></br>`);
		document.write(`返回字节长度为1的UTF-16字符的码点：${s.codePointAt(1)}<br></br>`);
		document.write(`返回字节长度为2的UTF-16字符的码点，并以16进制输出：${s.codePointAt(2)}<br></br>`);
	}
</script>